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EMPLOYEE AND DIRECTOR EQUITY INCENTIVE PLANS (Details)
9 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Expected life of option (years) 4 years 4 years
Risk-free interest rate, minimum 0.85% 1.12%
Risk-free interest rate, maximum 1.70% 1.50%
Assumed volatility, minimum 101.06% 100.77%
Assumed volatility, maximum 110.31% 101.70%
Expected dividend rate 0.00% 0.00%
Expected forfeiture rate, minimum 7.20% 6.23%
Expected forfeiture rate, maximum 9.18% 12.63%